Vertical fluid storage tank



FIG. 1 is a top perspective view of a vertical fluid storage tank,showing our new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a right side view thereof;

FIG. 8 is a rear view thereof; and,

FIG. 9 is a cross-sectional view thereof taken along line 9-9 of FIG. 3.

The broken line showings of FIGS. 1-9 are environmental only and notpart of the claimed design.

CLAIM The ornamental design for a vertical fluid storage tank, as shownand described.